Car-ventilating system



Dec. 17, 1929. .1. w. BERNBA UM ET AL I CAR VENTILATING SYSTEM 5Sheets-Sheet 1 Filed my. 11

Dec.l7, 1929. J. w. BERNBAUM ETAL 1,739,777

CAR VENTILATING'SYSTEM Filed 601;. 11. 1926 5 Sheets-Sheet 2 Imfent xsWi nesse 1929. J. WQBERNBAUM ETAL I 7 CAR VENTILATING SYSTEM Filed Oct.11; 1926 s sheets-sheet s l mfen 01's Wm i Dec. 17, 1929; J. w. BERNBAUMET AL- 1,739,777

CAR VENTILATI'NG SYSTEM Fil Oct. '11. 1926 5 Shets-Sheet- 4' InJnEE Dec.17, W29. J, w. BERNBAUM ETI'AL CAR VENTILATING SYSTEM Filed Oct. 11,1926 5 Sheets-Sheet- 5 w D A Patented Dec. 17,1929

nine srras entrant orrtee JOHN W. BERNBAUM AND WILLIAM WRIGHT, OFCHICAGO, ILLINOIS, ASSIGNOBS TO HOTCHKISS, BLUE & CO. LTD., OF CHICAGO,ILLINOIS, A CORPORATION OF ILLINOIS CAR-VENTILATING SYSTEM Applicationfiled October 11, 1926. Serial No. 140,719.

Our invention relates to a system for ven Figure 9 is a sectionalelevation of one end tilating railroad cars and the various comof a daycoach provided with our invention.

partments thereof; the system involving means whereby the foul orvitlated air is not 5 only withdrawn from the car by controllablemechanism, but also means whereby fresh air may be introduced into thecar or its various compartments at all times whether the car is inmotion or standing still said means being under control of the carattendant or occupant; while the quantity of fresh air introduced at anyone point or compartment may be regulated by the occupant of suchcompartment.

The invention also involves means whereby the air introduced from thecar exterior will be made to flow through a cleaning means before it isforcibly introduced into the car proper. 1 0

The objects and advantages of our invention will be more fullycomprehended from the detailed description of the accompanying drawings,wherein- Figure 1 is a longitudinal sectional view of a portion of asleeping car with parts brokenaway. v

Figure 2 is a sectional planview of a portion of a sleeping car withintermediate portions broken away and taken substantially on the line'22 of Figure 1 looking downwardly. v y

Figure 3 is a detail sectional view taken on the line 33 of Figure 1looking in the direction of the arrows.

Figure 1 is a detail sectional view taken on the line44 of Figure 1looking in the di-' rection of the arrows.

Figure ,5 is a vertical sectional view of a private car compartment,with portions of the roof broken away and the running gear omitted.

Figure 6 is a vertical sectional view taken on the line 66of Figurelooking in the direction of the arrows.

Figure 7 is a detail sectional view taken on the line 7-7 of Figure 6looking in the direction of the arrows.

Figure 8 is a sectional view. taken 0n.the line 88 of Figure 6 lookingin the direction of the arrows.

Figure 10 is asectional view taken on the line 1010 of Figure 9 lookingin the direction of the arrows.

Figure 11 is a detail sectional view taken on the line 1l11 of Figure 9looking in the direction of the arrows.

In the exemplification of the invention as disclosed in the first fourfigures of the drawings, our improved ventilating system has been showninstalled in the usual type of sleeper, wherein the berth forming seatsare generally indicated at 15; with the upper berth portion, inclosed'condition being shown at 16 and the vestibule end of the carprovided with the usual door 17, the top portion whereof is shownprovided with louvres or air admitting openings 18 in order to permitfresh air from the car exterior to enter the upper part of the vestibulewhen the door is closed.

The ceiling 19 of the vestibule, preferably ad acent opposite sides ofthe car and therefore at points above the louvres 18 in the doors, isshown provided with screened openlugs 20, for the purpose of admittingthe fresh air, flowing through louvres 18, into the compartment abovethe ceiling 19.

This compartment is provided with suction or pressure fans generallyindicated at 21; the fans being operated by suitable electric motorsindicated at 22.

In the particular exemplification, a pressu'reyfan 21 is shown locatedat each side of the compartment above the ceiling; and the intake end ofeach fan is shown provided with a duct 23 which connects with a suitableair cleaning device indicated at 24. The air cleaning device (one beingshown at each side of the compartment above the ceiling of thevestibule) is preferably of the dual type pro-' vided with a pair ofintake ends 25, 25; the air cleaning device being of a well knowncentrifugal type of construction whereby any v foreign matter carried bythe ingoing airis caused to accumulate in the bottom of the the pressurefans 21.

abl

openin fans arran .ing room on the op the occupant of the berth may 37from the opposite end through the ducts 23 to the intake ends of Thecompartment above the ceiling 19 of the vestibule at a pointintermediate-of the screened opening 20 and the air cleaner 24 ispreferably provided with a baffle 26, see Figures 2 and 3, disposedvertically upward from the ceiling so that any entrained matter, dirtand cinders would be deflected by the bafile 26 while the air currentsare permitted to pass over the baflle toward the intake ends 25 locatedat the top of the air cleaner 24.

The exhaust or pressure side of the fan 21 is provided with a dischargeconduit 27 which extends through the inner end wall 28 of the car andcommunicates with a chamber 29 arranged, for convenience in the upperpart of the usual locker indicated at 30, in the one instance, and inthe saloon, lavatory or dressosite side in the other instance, as shownin igure 2. The ehambegs 29 are each provided with a horizontallydisposed baflle 31, more clearly shown in Figure 3, whereby the chamberis divided into upper and lower compartments; the upper compartmentcommunicating with an air duct 32 arranged along the upper side of thecar preferably intermediate of the outer wall 33 and the inner wall 34and extending lengthwise of the car for substantially half the lengththereof. The air duct 32, at suitable oints in'the car coincident withthe upper ii therein, is provided with outlet openings as shown at 35 inFigures 2 and 4 and these openings are each provided with suitablesliding or controllable shutters 36 whereby either entirely shut ofi theinflow of fresh an or control the quantity to be admitted.

The lower compartment of the chamber 29" communicates with a duct 37which is likewise disposed lengthwise of the car preferthrou houtsubstantially half its length an provi ed at points intermediate of thevarious berth compartments or seats 15 with a downwardly extendingconduit as at 38 .through the inner side wall intermediate of thewindows 39, 39 where the openin is provided with a suitable controllableslide or shutter as at 40 so that the occupant or 0021632111135 of thelower berth may regulate the i ow of fresh air to the respectivecompartment or berth. I

It will be understood that each end of the car is similarly equippedwith the inlet louvres in the doors of the vestibule, .the screenedopenings into the compartment above the ceil ing 19, air cleaners andbaflies and pressure ed on opposite sides and that the resh'air ducts,similar to 32'and of the car extend lengthwise thereof adistanceslightly less than half the length and terminating in thecompartment or berth adjacent to the last compartment or berth suppliedby the air discharge erths posite end are likewise provided with thedischarge openings with their controllable slides or shutters asheretofore described. In

other words, the car or sleeper is preferably equipped with four unitsof fresh air providing means so that the entire car or any portionthereof may be supplied.

In addition to the admission of fresh air, the deck of the car at pointscoincident with the usual vent openings generally indicated at 41 may beprovided externally with a suitable housing in which an exhaust fan 43is located; the exhaust fan or fans being operated by a suitable motoror motors controllable from a common point or switch by the carattendant.

In Figures 5 to 8, we illustrate the application of our improved systemto a private car compartment wherein the deck of the car on one side isprovided, with a housing 44 having opposite end openings 44, 44, seeFigure 7, provided by the curved partitions 44", which are arranged inspaced relation with each other and terminate short of the outer wall ofthe housing 44, to provide air passages, leading to the air cleaners 45,which are preferably of the centrifugal type similar to the air cleaners24 heretofore described, The air cleaners 45'are connected by a suitableduct 46 with the suction side of the fan 47. The fan is provided with adischarge conduit 48 shown extending downwardly along one of the wallsofthe con'ipartment and having a discharge opening 49 adjacent to thefloor of the car, with the discharge opening provided with a suitablecontrolling shutter or slide as at 50 so that the admission or quantityof air to be admittedis under the control of the occupant.

The opposite side of the compartment is provided with the usual dropdoor 51 of the vent opening which communicates with a housin 52 arran edon the roof of the car In Figures 9, 10 and 11, we illustrate theapplication of our invention to a railroad day coach wherein the door ithe vestibule is likewise provided with the openings 18 arrangedadjaccnt to the ceiling 19 of the vestibule; the latter being providedwith the screened openings 20 as in the previously de-, scribedconstruction of thesleeper. The compartment above the ceiling 19 islikewise provided with the centrifugal air cleaners-24 having the twoair admitting portions 25 While the bod of the air cleaner is providedwith the con uit or duct 23 which communicates with the suction orintake side of the pressurefan 21; the latter being operated by asuitable motor as at 22. The exhaust or discharge end of the pressurefan is provided with a conduit 54: which extends through the end wall ofthe car and communicates with a conduit or duct 55 which continues orconnects with the conduitor duct 56 extending along the sides of the carpreferably adjacent to the floor. 'lhe'duct is also shown provided witha transversely disposed duct 5? extending along the bottom of the endwall 58 of the car and terminating adjacent to the inner door opening ofthe car. The ducts 56 and 57 are shown as preferably built about theheating pipes of the car, so that the introduced fresh air may betempered or heated before being discharged into the ear proper.

The ducts 56 are provided with short extensions or branches 59 whichextend beneath the seats (it) of the car; the extensions or branches 59preferably being tapered toward the free ends as shown in Figure 11;with the end of each branch 59 being provided with a controllable slideor shutter as at 61. The ducts 5? are also shown provided withcontrollable slides or shutters as at 62 in Figure 10.

With the discharge ends of the conduits or ducts providedwith the slidesor shutters, the admission or quantity of air admission is under thecontrol of the passenger or train operatives and'the entire car'or anyportion thereof may be supplied with fresh air introduced from the carexterior. It will be understood that the day coach, like the sleeperconstruction previously described, is preferably provided with fourunits of air introducing means; with each unit serving a portion of oneside of a car from one end thereof; the ducts 56 extending substantiallyhalf the length of the car as in the sleeper construction, so that eachend of the car is served from its adjacent vestibule and unit.

As is apparent from the constructions shown and described, the air,before it is forced and admitted into the car, is caused to pass througha screen into the pressure fan holding compartment, where it alsoencounters a vertically disposed baflie extend ing to ashort distanceremoved from the top of the compartment, namely the roof of the car; thebaflie being preferably of the construction more clearly shown in Figure3,

where it is shown provided with a surrounding flange as at 26, againstwhich cinders or other foreign matter entrained, which may have passedthrough the screen 20, will impinge and be caused to drop, while the airis allowed to flow across the top of the baflle on its way, to the aircleaners 24 which communicate with the intake or suction side ofthepressure fans. Any entrained matter or particles entering thecleaners will be disment above the ceiling 19 in any suitable manner.

We. have illustrated adaptations of ourinvention to various types ofcars and have described the same in terms employed merely as terms ofdescription and not as terms of limitation as structural modificationsare possible and may be made without, however, departing from the spiritof our invention.

\Vhat we claim is: 1. In a car ventilating system, the combination of a'carprovided with a chamber adjacent the top thereof and having aninlet, car-doors provided with openings adjacent to the inlet of thechamber for receiving air from the car exterior, air cleaning meanslocated in said chamber, pressure means adapted to receive the cleanedair from said cleaning means, a chamber connected with the discharge endof the pressure means,

a plurality of ducts connected with said chamber and extending topredetermined points in the car, and independently controlled means atthe discharge ends of the ducts.

2. In a car ventilating system, the combination of the vestibule doorsof the car provided with louvres adjacent to the tops of the doors, anair receiving chamber above the vestibule of the car, power operated airforcing means located in said chamber, air cleaning means at the intakeend of said air forcing means, a chamber connected with the .dischargeend of the air forcing means, and

air ducts leading from said last mentioned chamber to predeterminedpoints in the car.

3. In a car ventilating system, the combinations of the vestibule doorsof the car provided with air admitting openings adjacent to the tops ofthe doors, an air receiving chamber above the car vestibule, air forcingmeans located in said chamber, a baflle intermediate of the air forcingmeans and the air receiving end of said chamber, and means communicatingwith the discharge end of said air forcing means whereby the air isconveyed to predetermined points in the car.

4. In a car ventilating system of the character described thecombination of 'a vestibule passenger car, a chamber a ove the vestibule provided with air inlets in the bottom, air admitting openings inthe vestibule doors of the car, air forcing means located in thechamber, air cleaning means in the chamber intermediate of the airforcing means and the air inlets of the chamber, and means for conveyingthe air from the air forcing means into the car interior.

\ JOHN W. BERNBAUM.

WILLIAM WRIGHT.

charged through the bottomof the cleaners and removed or conveyedfrom-the compart-

